Home
Back
Engine Size Formula:
| From: | To: |
Engine size, also known as engine displacement, is the total volume of air/fuel mixture an engine can draw in during one complete engine cycle. It's a key specification that indicates an engine's power potential and efficiency.
The calculator uses the engine size formula:
Where:
Explanation: The formula calculates the volume of a single cylinder (πr² × stroke) and multiplies it by the number of cylinders to get total engine displacement.
Details: Engine size is a critical factor in determining an engine's power output, torque characteristics, fuel efficiency, and emissions. Larger engines typically produce more power but consume more fuel.
Tips: Enter bore and stroke measurements in millimeters, and the number of cylinders. All values must be positive numbers. The result is displayed in cubic centimeters (cm³ or cc).
Q1: What's the difference between bore and stroke?
A: Bore is the diameter of each cylinder, while stroke is the distance the piston travels within the cylinder.
Q2: How does engine size relate to power output?
A: Generally, larger engines can produce more power, but technology like turbocharging and efficiency improvements can allow smaller engines to produce similar power.
Q3: Why is engine size measured in cubic centimeters or liters?
A: These units represent the total volume displaced by all pistons moving from top to bottom of their stroke, providing a standardized way to compare engine sizes.
Q4: What is a typical engine size range?
A: Motorcycles: 50-2000cc, Cars: 1000-6000cc, Trucks: 4000-15000cc. Electric vehicles don't use this measurement as they don't have combustion cylinders.
Q5: Does a larger engine always mean better performance?
A: Not necessarily. Engine design, forced induction, weight, and efficiency all play important roles in overall performance and fuel economy.